private void WriteStringEscapeProperty(ReadOnlySpan <byte> utf8PropertyName, DateTimeOffset value, int firstEscapeIndexProp)
{
Debug.Assert(int.MaxValue / JsonConstants.MaxExpansionFactorWhileEscaping >= utf8PropertyName.Length);
Debug.Assert(firstEscapeIndexProp >= 0 && firstEscapeIndexProp < utf8PropertyName.Length);
byte[]? propertyArray = null;
int length = JsonWriterHelper.GetMaxEscapedLength(utf8PropertyName.Length, firstEscapeIndexProp);
Span <byte> escapedPropertyName = length <= JsonConstants.StackallocByteThreshold ?
stackalloc byte[JsonConstants.StackallocByteThreshold] :
(propertyArray = ArrayPool <byte> .Shared.Rent(length));
JsonWriterHelper.EscapeString(utf8PropertyName, escapedPropertyName, firstEscapeIndexProp, _options.Encoder, out int written);
WriteStringByOptions(escapedPropertyName.Slice(0, written), value);
if (propertyArray != null)
{
ArrayPool <byte> .Shared.Return(propertyArray);
}
}
private void WriteNumberEscapeProperty(ReadOnlySpan <char> propertyName, decimal value, int firstEscapeIndexProp)
{
Debug.Assert(int.MaxValue / JsonConstants.MaxExpansionFactorWhileEscaping >= propertyName.Length);
Debug.Assert(firstEscapeIndexProp >= 0 && firstEscapeIndexProp < propertyName.Length);
char[]? propertyArray = null;
int length = JsonWriterHelper.GetMaxEscapedLength(propertyName.Length, firstEscapeIndexProp);
Span <char> escapedPropertyName = length <= JsonConstants.StackallocCharThreshold ?
stackalloc char[JsonConstants.StackallocCharThreshold] :
(propertyArray = ArrayPool <char> .Shared.Rent(length));
JsonWriterHelper.EscapeString(propertyName, escapedPropertyName, firstEscapeIndexProp, _options.Encoder, out int written);
WriteNumberByOptions(escapedPropertyName.Slice(0, written), value);
if (propertyArray != null)
{
ArrayPool <char> .Shared.Return(propertyArray);
}
}
private void WriteCommentIndented(ReadOnlySpan <char> value)
{
int indent = Indentation;
Debug.Assert(indent <= 2 * JsonConstants.MaxWriterDepth);
Debug.Assert(value.Length < (int.MaxValue / JsonConstants.MaxExpansionFactorWhileTranscoding) - indent - 4 - s_newLineLength);
// All ASCII, /*...*/ => escapedValue.Length + 4
// Optionally, 1-2 bytes for new line, and up to 3x growth when transcoding
int maxRequired = indent + (value.Length * JsonConstants.MaxExpansionFactorWhileTranscoding) + 4 + s_newLineLength;
if (_memory.Length - BytesPending < maxRequired)
{
Grow(maxRequired);
}
Span <byte> output = _memory.Span;
if (_tokenType != JsonTokenType.None)
{
WriteNewLine(output);
}
JsonWriterHelper.WriteIndentation(output.Slice(BytesPending), indent);
BytesPending += indent;
output[BytesPending++] = JsonConstants.Slash;
output[BytesPending++] = JsonConstants.Asterisk;
ReadOnlySpan <byte> byteSpan = MemoryMarshal.AsBytes(value);
OperationStatus status = JsonWriterHelper.ToUtf8(byteSpan, output.Slice(BytesPending), out int _, out int written);
Debug.Assert(status != OperationStatus.DestinationTooSmall);
BytesPending += written;
output[BytesPending++] = JsonConstants.Asterisk;
output[BytesPending++] = JsonConstants.Slash;
}
/// <summary>
/// Writes the value (as a JSON number) as an element of a JSON array.
/// </summary>
/// <param name="utf8FormattedNumber">The value to write.</param>
/// <exception cref="ArgumentException">
/// Thrown when <paramref name="utf8FormattedNumber"/> does not represent a valid JSON number.
/// </exception>
/// <exception cref="InvalidOperationException">
/// Thrown if this would result in invalid JSON being written (while validation is enabled).
/// </exception>
/// <remarks>
/// Writes the <see cref="int"/> using the default <see cref="StandardFormat"/> (that is, 'G'), for example: 32767.
/// </remarks>
internal void WriteNumberValue(ReadOnlySpan <byte> utf8FormattedNumber)
{
JsonWriterHelper.ValidateValue(utf8FormattedNumber);
JsonWriterHelper.ValidateNumber(utf8FormattedNumber);
if (!_options.SkipValidation)
{
ValidateWritingValue();
}
if (_options.Indented)
{
WriteNumberValueIndented(utf8FormattedNumber);
}
else
{
WriteNumberValueMinimized(utf8FormattedNumber);
}
SetFlagToAddListSeparatorBeforeNextItem();
_tokenType = JsonTokenType.Number;
}
private void WriteStringEscapeValue(ReadOnlySpan <byte> utf8Value, int firstEscapeIndexVal)
{
Debug.Assert(int.MaxValue / JsonConstants.MaxExpansionFactorWhileEscaping >= utf8Value.Length);
Debug.Assert(firstEscapeIndexVal >= 0 && firstEscapeIndexVal < utf8Value.Length);
byte[]? valueArray = null;
int length = JsonWriterHelper.GetMaxEscapedLength(utf8Value.Length, firstEscapeIndexVal);
Span <byte> escapedValue = length <= JsonConstants.StackallocThreshold ?
stackalloc byte[length] :
(valueArray = ArrayPool <byte> .Shared.Rent(length));
JsonWriterHelper.EscapeString(utf8Value, escapedValue, firstEscapeIndexVal, _options.Encoder, out int written);
WriteStringByOptions(escapedValue.Slice(0, written));
if (valueArray != null)
{
ArrayPool <byte> .Shared.Return(valueArray);
}
}
private void WriteBase64EscapeProperty(ReadOnlySpan <char> propertyName, ReadOnlySpan <byte> bytes, int firstEscapeIndexProp)
{
Debug.Assert(int.MaxValue / JsonConstants.MaxExpansionFactorWhileEscaping >= propertyName.Length);
Debug.Assert(firstEscapeIndexProp >= 0 && firstEscapeIndexProp < propertyName.Length);
char[] propertyArray = null;
int length = JsonWriterHelper.GetMaxEscapedLength(propertyName.Length, firstEscapeIndexProp);
Span <char> escapedPropertyName = length <= JsonConstants.StackallocThreshold ?
stackalloc char[length] :
(propertyArray = ArrayPool <char> .Shared.Rent(length));
JsonWriterHelper.EscapeString(propertyName, escapedPropertyName, firstEscapeIndexProp, out int written);
WriteBase64ByOptions(escapedPropertyName.Slice(0, written), bytes);
if (propertyArray != null)
{
ArrayPool <char> .Shared.Return(propertyArray);
}
}
// TODO: https://github.com/dotnet/corefx/issues/36958
private void WriteStringIndented(ReadOnlySpan <byte> escapedValue)
{
int indent = Indentation;
Debug.Assert(indent <= 2 * JsonConstants.MaxWriterDepth);
Debug.Assert(escapedValue.Length < int.MaxValue - indent - 3 - s_newLineLength);
int minRequired = indent + escapedValue.Length + 2; // 2 quotes
int maxRequired = minRequired + 1 + s_newLineLength; // Optionally, 1 list separator and 1-2 bytes for new line
if (_memory.Length - BytesPending < maxRequired)
{
Grow(maxRequired);
}
Span <byte> output = _memory.Span;
if (_currentDepth < 0)
{
output[BytesPending++] = JsonConstants.ListSeparator;
}
if (_tokenType != JsonTokenType.None)
{
WriteNewLine(output);
}
JsonWriterHelper.WriteIndentation(output.Slice(BytesPending), indent);
BytesPending += indent;
output[BytesPending++] = JsonConstants.Quote;
escapedValue.CopyTo(output.Slice(BytesPending));
BytesPending += escapedValue.Length;
output[BytesPending++] = JsonConstants.Quote;
}
// TODO: https://github.com/dotnet/corefx/issues/36958
private void WriteStringIndented(ReadOnlySpan <char> escapedValue)
{
int indent = Indentation;
Debug.Assert(indent <= 2 * JsonConstants.MaxWriterDepth);
Debug.Assert(escapedValue.Length < (int.MaxValue / JsonConstants.MaxExpansionFactorWhileTranscoding) - indent - 3 - s_newLineLength);
// All ASCII, 2 quotes => indent + escapedValue.Length + 2
// Optionally, 1 list separator, 1-2 bytes for new line, and up to 3x growth when transcoding
int maxRequired = indent + (escapedValue.Length * JsonConstants.MaxExpansionFactorWhileTranscoding) + 3 + s_newLineLength;
if (_memory.Length - BytesPending < maxRequired)
{
Grow(maxRequired);
}
Span <byte> output = _memory.Span;
if (_currentDepth < 0)
{
output[BytesPending++] = JsonConstants.ListSeparator;
}
if (_tokenType != JsonTokenType.None)
{
WriteNewLine(output);
}
JsonWriterHelper.WriteIndentation(output.Slice(BytesPending), indent);
BytesPending += indent;
output[BytesPending++] = JsonConstants.Quote;
TranscodeAndWrite(escapedValue, output);
output[BytesPending++] = JsonConstants.Quote;
}
private void WriteStringMinimized(ReadOnlySpan <char> escapedPropertyName, DateTimeOffset value)
{
Debug.Assert(escapedPropertyName.Length < (int.MaxValue / JsonConstants.MaxExpansionFactorWhileTranscoding) - JsonConstants.MaximumFormatDateTimeOffsetLength - 6);
// All ASCII, 2 quotes for property name, 2 quotes for date, and 1 colon => escapedPropertyName.Length + JsonConstants.MaximumFormatDateTimeOffsetLength + 5
// Optionally, 1 list separator, and up to 3x growth when transcoding
int maxRequired = (escapedPropertyName.Length * JsonConstants.MaxExpansionFactorWhileTranscoding) + JsonConstants.MaximumFormatDateTimeOffsetLength + 6;
if (_memory.Length - BytesPending < maxRequired)
{
Grow(maxRequired);
}
Span <byte> output = _memory.Span;
if (_currentDepth < 0)
{
output[BytesPending++] = JsonConstants.ListSeparator;
}
output[BytesPending++] = JsonConstants.Quote;
TranscodeAndWrite(escapedPropertyName, output);
output[BytesPending++] = JsonConstants.Quote;
output[BytesPending++] = JsonConstants.KeyValueSeperator;
output[BytesPending++] = JsonConstants.Quote;
Span <byte> tempSpan = stackalloc byte[JsonConstants.MaximumFormatDateTimeOffsetLength];
bool result = Utf8Formatter.TryFormat(value, tempSpan, out int bytesWritten, s_dateTimeStandardFormat);
Debug.Assert(result);
JsonWriterHelper.TrimDateTimeOffset(tempSpan.Slice(0, bytesWritten), out bytesWritten);
tempSpan.Slice(0, bytesWritten).CopyTo(output.Slice(BytesPending));
BytesPending += bytesWritten;
output[BytesPending++] = JsonConstants.Quote;
}
private void WriteStringMinimized(ReadOnlySpan <byte> escapedPropertyName, DateTimeOffset value)
{
Debug.Assert(escapedPropertyName.Length < int.MaxValue - JsonConstants.MaximumFormatDateTimeOffsetLength - 6);
int minRequired = escapedPropertyName.Length + JsonConstants.MaximumFormatDateTimeOffsetLength + 5; // 2 quotes for property name, 2 quotes for date, and 1 colon
int maxRequired = minRequired + 1; // Optionally, 1 list separator
if (_memory.Length - BytesPending < maxRequired)
{
Grow(maxRequired);
}
Span <byte> output = _memory.Span;
if (_currentDepth < 0)
{
output[BytesPending++] = JsonConstants.ListSeparator;
}
output[BytesPending++] = JsonConstants.Quote;
escapedPropertyName.CopyTo(output.Slice(BytesPending));
BytesPending += escapedPropertyName.Length;
output[BytesPending++] = JsonConstants.Quote;
output[BytesPending++] = JsonConstants.KeyValueSeperator;
output[BytesPending++] = JsonConstants.Quote;
Span <byte> tempSpan = stackalloc byte[JsonConstants.MaximumFormatDateTimeOffsetLength];
bool result = Utf8Formatter.TryFormat(value, tempSpan, out int bytesWritten, s_dateTimeStandardFormat);
Debug.Assert(result);
JsonWriterHelper.TrimDateTimeOffset(tempSpan.Slice(0, bytesWritten), out bytesWritten);
tempSpan.Slice(0, bytesWritten).CopyTo(output.Slice(BytesPending));
BytesPending += bytesWritten;
output[BytesPending++] = JsonConstants.Quote;
}
private void WriteStringValueIndented(DateTimeOffset value)
{
int indent = Indentation;
Debug.Assert(indent <= 2 * JsonConstants.MaxWriterDepth);
// 2 quotes, and optionally, 1 list separator and 1-2 bytes for new line
int maxRequired = indent + JsonConstants.MaximumFormatDateTimeOffsetLength + 3 + s_newLineLength;
if (_memory.Length - BytesPending < maxRequired)
{
Grow(maxRequired);
}
Span <byte> output = _memory.Span;
if (_currentDepth < 0)
{
output[BytesPending++] = JsonConstants.ListSeparator;
}
if (_tokenType != JsonTokenType.PropertyName)
{
if (_tokenType != JsonTokenType.None)
{
WriteNewLine(output);
}
JsonWriterHelper.WriteIndentation(output.Slice(BytesPending), indent);
BytesPending += indent;
}
output[BytesPending++] = JsonConstants.Quote;
JsonWriterHelper.WriteDateTimeOffsetTrimmed(output.Slice(BytesPending), value, out int bytesWritten);
BytesPending += bytesWritten;
output[BytesPending++] = JsonConstants.Quote;
}
private void WriteStringValueMinimized(DateTimeOffset value)
{
int maxRequired = JsonConstants.MaximumFormatDateTimeOffsetLength + 3; // 2 quotes, and optionally, 1 list separator
if (_memory.Length - BytesPending < maxRequired)
{
Grow(maxRequired);
}
Span <byte> output = _memory.Span;
if (_currentDepth < 0)
{
output[BytesPending++] = JsonConstants.ListSeparator;
}
output[BytesPending++] = JsonConstants.Quote;
JsonWriterHelper.WriteDateTimeOffsetTrimmed(output.Slice(BytesPending), value, out int bytesWritten);
BytesPending += bytesWritten;
output[BytesPending++] = JsonConstants.Quote;
}
private void WriteCommentIndented(ReadOnlySpan <byte> utf8Value)
{
int indent = Indentation;
Debug.Assert(indent <= 2 * _options.MaxDepth);
Debug.Assert(utf8Value.Length < int.MaxValue - indent - 4 - s_newLineLength);
int minRequired = indent + utf8Value.Length + 4; // /*...*/
int maxRequired = minRequired + s_newLineLength; // Optionally, 1-2 bytes for new line
if (_memory.Length - BytesPending < maxRequired)
{
Grow(maxRequired);
}
Span <byte> output = _memory.Span;
if (_tokenType != JsonTokenType.PropertyName)
{
if (_tokenType != JsonTokenType.None)
{
WriteNewLine(output);
}
JsonWriterHelper.WriteIndentation(output.Slice(BytesPending), indent);
BytesPending += indent;
}
output[BytesPending++] = JsonConstants.Slash;
output[BytesPending++] = JsonConstants.Asterisk;
utf8Value.CopyTo(output.Slice(BytesPending));
BytesPending += utf8Value.Length;
output[BytesPending++] = JsonConstants.Asterisk;
output[BytesPending++] = JsonConstants.Slash;
}
private static JsonEncodedText TranscodeAndEncode(ReadOnlySpan <char> value)
{
JsonWriterHelper.ValidateValue(value);
int expectedByteCount = JsonReaderHelper.GetUtf8ByteCount(value);
byte[] utf8Bytes = ArrayPool <byte> .Shared.Rent(expectedByteCount);
JsonEncodedText encodedText;
// Since GetUtf8ByteCount above already throws on invalid input, the transcoding
// to UTF-8 is guaranteed to succeed here. Therefore, there's no need for a try-catch-finally block.
int actualByteCount = JsonReaderHelper.GetUtf8FromText(value, utf8Bytes);
Debug.Assert(expectedByteCount == actualByteCount);
encodedText = EncodeHelper(utf8Bytes.AsSpan(0, actualByteCount));
// On the basis that this is user data, go ahead and clear it.
utf8Bytes.AsSpan(0, expectedByteCount).Clear();
ArrayPool <byte> .Shared.Return(utf8Bytes);
return(encodedText);
}
private static byte[] GetEscapedString(ReadOnlySpan <byte> utf8Value, int firstEscapeIndexVal, JavaScriptEncoder encoder)
{
Debug.Assert(int.MaxValue / JsonConstants.MaxExpansionFactorWhileEscaping >= utf8Value.Length);
Debug.Assert(firstEscapeIndexVal >= 0 && firstEscapeIndexVal < utf8Value.Length);
byte[] valueArray = null;
int length = JsonWriterHelper.GetMaxEscapedLength(utf8Value.Length, firstEscapeIndexVal);
Span <byte> escapedValue = length <= JsonConstants.StackallocThreshold ?
stackalloc byte[length] :
(valueArray = ArrayPool <byte> .Shared.Rent(length));
JsonWriterHelper.EscapeString(utf8Value, escapedValue, firstEscapeIndexVal, encoder, out int written);
byte[] escapedString = escapedValue.Slice(0, written).ToArray();
if (valueArray != null)
{
ArrayPool <byte> .Shared.Return(valueArray);
}
return(escapedString);
}
private void WriteStringEscapePropertyOrValue(ReadOnlySpan <byte> utf8PropertyName, ReadOnlySpan <char> value, int firstEscapeIndexProp, int firstEscapeIndexVal)
{
Debug.Assert(int.MaxValue / JsonConstants.MaxExpansionFactorWhileEscaping >= value.Length);
Debug.Assert(int.MaxValue / JsonConstants.MaxExpansionFactorWhileEscaping >= utf8PropertyName.Length);
char[] valueArray = null;
byte[] propertyArray = null;
if (firstEscapeIndexVal != -1)
{
int length = JsonWriterHelper.GetMaxEscapedLength(value.Length, firstEscapeIndexVal);
Span <char> escapedValue;
if (length > JsonConstants.StackallocThreshold)
{
valueArray = ArrayPool <char> .Shared.Rent(length);
escapedValue = valueArray;
}
else
{
// Cannot create a span directly since it gets assigned to parameter and passed down.
unsafe
{
char *ptr = stackalloc char[length];
escapedValue = new Span <char>(ptr, length);
}
}
JsonWriterHelper.EscapeString(value, escapedValue, firstEscapeIndexVal, out int written);
value = escapedValue.Slice(0, written);
}
if (firstEscapeIndexProp != -1)
{
int length = JsonWriterHelper.GetMaxEscapedLength(utf8PropertyName.Length, firstEscapeIndexProp);
Span <byte> escapedPropertyName;
if (length > JsonConstants.StackallocThreshold)
{
propertyArray = ArrayPool <byte> .Shared.Rent(length);
escapedPropertyName = propertyArray;
}
else
{
// Cannot create a span directly since it gets assigned to parameter and passed down.
unsafe
{
byte *ptr = stackalloc byte[length];
escapedPropertyName = new Span <byte>(ptr, length);
}
}
JsonWriterHelper.EscapeString(utf8PropertyName, escapedPropertyName, firstEscapeIndexProp, out int written);
utf8PropertyName = escapedPropertyName.Slice(0, written);
}
WriteStringByOptions(utf8PropertyName, value);
if (valueArray != null)
{
ArrayPool <char> .Shared.Return(valueArray);
}
if (propertyArray != null)
{
ArrayPool <byte> .Shared.Return(propertyArray);
}
}
private int WritePropertyNameIndented(ReadOnlySpan <char> escapedPropertyName)
{
int idx = 0;
if (_currentDepth < 0)
{
if (_buffer.Length <= idx)
{
GrowAndEnsure();
}
_buffer[idx++] = JsonConstants.ListSeparator;
}
if (_tokenType != JsonTokenType.None)
{
WriteNewLine(ref idx);
}
int indent = Indentation;
while (true)
{
bool result = JsonWriterHelper.TryWriteIndentation(_buffer.Slice(idx), indent, out int bytesWritten);
idx += bytesWritten;
if (result)
{
break;
}
indent -= bytesWritten;
AdvanceAndGrow(ref idx);
}
if (_buffer.Length <= idx)
{
AdvanceAndGrow(ref idx);
}
_buffer[idx++] = JsonConstants.Quote;
ReadOnlySpan <byte> byteSpan = MemoryMarshal.AsBytes(escapedPropertyName);
int partialConsumed = 0;
while (true)
{
OperationStatus status = JsonWriterHelper.ToUtf8(byteSpan.Slice(partialConsumed), _buffer.Slice(idx), out int consumed, out int written);
idx += written;
if (status == OperationStatus.Done)
{
break;
}
partialConsumed += consumed;
AdvanceAndGrow(ref idx);
}
if (_buffer.Length <= idx)
{
AdvanceAndGrow(ref idx);
}
_buffer[idx++] = JsonConstants.Quote;
if (_buffer.Length <= idx)
{
AdvanceAndGrow(ref idx);
}
_buffer[idx++] = JsonConstants.KeyValueSeperator;
if (_buffer.Length <= idx)
{
AdvanceAndGrow(ref idx);
}
_buffer[idx++] = JsonConstants.Space;
return(idx);
}